kimerajamm
Joined: 28 Nov 2010
Posts: 785
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 Posted: Mon Apr 25, 2011 12:24 pm Post subject: habitat and evolved |
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Species of both extinct and living (extant) lemur vary in size based on habitat conditions, despite their differences in niche preference. Within related groups, larger species tend to inhabit wetter, more productive habitats, while smaller sister taxa are found in drier, less productive habitats. This pattern suggests that populations of both living and extinct lemur species had become geographically isolated by differences in habitat and evolved in isolation due to varying primary production within different ecosystems. Thermoregulation may also have played a role in the evolution of their increased body size.[27] Yet despite this pressure to specialize and differentiate, some of the extinct subfossil lemurs, such as Archaeolemur, may have had island-wide distributions during the Holocene, unlike the living lemurs. If this is the case, it may suggest that some larger lemurs might have been more tolerant to regional differences in ecology than living lemurs.[4]
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